{"id":"CVE-2026-89970","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet-auth: Synchronize timeout work during SQ teardown\n\nnvmet_auth_sq_free() cancels auth_expired_work with\ncancel_delayed_work()","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet-auth: Synchronize timeout work during SQ teardown\n\nnvmet_auth_sq_free() cancels auth_expired_work with\ncancel_delayed_work(). If the work has already started, can…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","vendor":"Linux","product":"Linux","affected":["Linux >= 1a70200f404ae210b4f0334e3936e84f8edb6bc8 < 664022fa1c93f4eba09ef5ee02411b9709dd7a93","Linux >= 1a70200f404ae210b4f0334e3936e84f8edb6bc8 < c3c126a6142a1335bc8c34a5607c39cf01daf295","Linux >= 1a70200f404ae210b4f0334e3936e84f8edb6bc8 < c17c87bde6d6f5252a6a6f0a94b2430164aa28d5","Linux >= 1a70200f404ae210b4f0334e3936e84f8edb6bc8 < 7555ddd60af72df2862dd8f9b730a9848577edda","Linux >= 1a70200f404ae210b4f0334e3936e84f8edb6bc8 < eb4f9127a2b8a152743f1ee597627e2f69cb54fe","Linux >= 1a70200f404ae210b4f0334e3936e84f8edb6bc8 < eaa948c0e19b1bb2d93262207bca0c3d19cc3406","Linux 6.0"],"published":"2026-09-16","updated":"2026-09-16","sourceUpdated":"2026-09-16T15:18:21.387","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-89970","references":[{"url":"https://git.kernel.org/stable/c/664022fa1c93f4eba09ef5ee02411b9709dd7a93","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/7555ddd60af72df2862dd8f9b730a9848577edda","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c17c87bde6d6f5252a6a6f0a94b2430164aa28d5","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c3c126a6142a1335bc8c34a5607c39cf01daf295","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/eaa948c0e19b1bb2d93262207bca0c3d19cc3406","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/eb4f9127a2b8a152743f1ee597627e2f69cb54fe","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-16T10:53:53.956Z","epss":0.00782,"epssPercentile":0.54479,"slug":"CVE-2026-89970","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nnvmet-auth: Synchronize timeout work during SQ teardown\n\nnvmet_auth_sq_free() cancels auth_expired_work with\ncancel_delayed_work(). If the work has already started, cancellation does\nnot wait for the callback. Transport teardown can consequently free or\nreuse the queue containing struct nvmet_sq while\nnvmet_auth_expired_work() still accesses that SQ.\n\nAdd a teardown-specific helper that synchronously drains the delayed work\nbefore freeing authentication state, and use it from nvmet_sq_destroy().\nKeep the non-synchronous helper for in-band authentication state cleanup,\nwhere the SQ owner remains alive.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[{"seq":205069,"id":"CVE-2026-89970","ts":1789570705036,"field":"cvss","old":null,"new":"9.8"},{"seq":205068,"id":"CVE-2026-89970","ts":1789570705036,"field":"severity","old":"none","new":"critical"}]}